IPFS and blockchain are technologies that are built on top of the internet - they assume a network connection already exists.
I wont speak for blockchains. Call them by the boring name as "Append-only databases with a consensus mechanism on what to add, with a proof-of-something to affirm that work of some soft was done".
IPFS is different. They have already planned that IP4 isn't the next thing. Or IP6, or IP8, and on. They created what they call a MultiAddr that encodes the protocol definition to explain to peers and IPFS what protocol stack to use, and then lay IPFS on top of that.
Obviously when a new protocol comes into play, they add a new multiaddr type for the new protocol, and off you go.
My gut feeling is that to create a long-term platform (rather than a point solution) we'd have to refit many extant application protocol stacks with CRDTs and reconceptualised crypto. Although for this contest I'd be imagining something less advanced, maybe a drone-based 4G hotspot loitering over communities with a copy of Wikipedia, a camera trained to detect signs of urgent distress, and a store-and-forward microblogging service like some automated Postman.
Someone should call Elon Musk and Vint Cerf about it, too, because I see many similarities between the outcomes for this and the outcomes for the Interplanetary Internet [1] which has been an ongoing research effort for years.